Apparatus for writing image on electronic paper

Abstract

Disclosed is an apparatus for writing an image on electronic paper, the apparatus including a writing head having a plurality of pixel electrodes corresponding to a plurality of pixels forming an image, the writing head applying a voltage to the pixel electrodes according to inputted address signals and data signals; a driver for generating the address and data signals according to an inputted image frame signal and outputting the address and data signals to the writing head; and a controller for generating the image frame signal and outputting the image frame signals to the driver.

What is claimed is: 
     
       1. An apparatus for writing an image on electronic paper, the apparatus comprising:
 a writing head having a plurality of pixel electrodes corresponding to a plurality of pixels forming an image, the writing head applying a voltage to select pixel electrodes according to input address signals and data signals; 
 a driver for generating the address and data signals according to a user input and outputting the address and data signals to the writing head; and 
 a controller for generating an image frame signal and outputting the image frame signal to the driver, 
 wherein the writing head comprises pixel electrodes corresponding to all pixels forming the image, and the writing head and the electronic paper are fixed with respect to each other by attaching an entire lower surface of the electronic paper to the writing head while the writing head is writing the image on the electronic paper, and 
 wherein the electronic paper includes an ink layer and a common electrode layer, and the writing head writes the image on the electronic paper by applying an electric field between the common electrode layer of the electronic paper and the pixel electrodes of the writing head. 
 
     
     
       2. The apparatus as claimed in  claim 1 , wherein the writing head further comprises a plurality of thin film transistors, and each of the pixel electrodes is connected to a corresponding scan line and a corresponding data line of the driver through a corresponding thin film transistor. 
     
     
       3. The apparatus as claimed in  claim 1 , further comprising:
 an input part for receiving from a user an input of information regarding an image; and 
 a display part for displaying the image frame signal input from the controller on a screen. 
 
     
     
       4. The apparatus as claimed in  claim 2 , wherein the driver comprises:
 a scan driver for sequentially supplying address signals to the scan lines under the control of the controller; and 
 a data driver for supplying data signals to the data lines under the control of the controller. 
 
     
     
       5. The apparatus as claimed in  claim 1 , wherein the electronic paper is attached to the writing head via an adhesive. 
     
     
       6. The apparatus as claimed in  claim 4 , wherein the driver further comprises:
 a motor driver for generating a driving signal under the control of the controller; 
 a motor for supplying driving force according to the driving signal; and 
 a guide for moving the writing head via the driving force supplied from the motor.